SimCom SIM5215 Hardware Design page 71

Smart Machine Smart Decision
Your cellular terminal or mobile receives and transmits radio frequency energy while
switched on. RF interference can occur if it is used close to TV sets, radios, computers
or other electric equipment.
Road safety comes first! Do not use a hand-held cellular terminal or mobile when
driving a vehicle, unless it is securely mounted in a holder for hands free operation.
Before making a call with a hand-held terminal or mobile, park the vehicle.
GSM cellular terminals or mobiles operate over radio frequency signals and cellular
networks and cannot be guaranteed to connect in all conditions, for example no mobile
fee or a invalid SIM card. While you are in this condition and need emergent help,
please remember using emergency calls. In order to make or receive calls, the cellular
terminal or mobile must be switched on and in a service area with adequate cellular
signal strength.
Some networks do not allow for emergency call if certain network services or phone
features are in use (e.g. lock functions, fixed dialing etc.). You may have to deactivate
those features before you can make an emergency call.
Also, some networks require that a valid SIM card be properly inserted in the cellular
terminal or mobile.
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SIM5215&SIM5216_Hardware Design_V2.02 2012-08-31